Leung, Andrew Yee TakAndrew Yee TakLeung2022-05-232022-05-231978https://repository.sfu.edu.hk/handle/sfu/3306A new and efficient method of dynamic condensation is presented. It reduces the order of dynamic matrices without introducing further approximation by representing the passive co−ordinates in terms of the active ones exactly. The resulting frequency dependent eigenvalue problem is solved by a combined technique of Sturm sequence and subspace iteration. Examples are given for a space frame and a substructure problem. Results are compared to the complete solution.enjournal article10.1002/nme.1620121108